Priority scheme for supporting quality of service in optical burst switching networks

Ayman Kaheel, Hussein Alnuweiri

Research output: Contribution to journalArticle

6 Citations (Scopus)


Feature Issue on Optical Interconnection Networks (OIN) We present what we believe to be a new scheme, called preemptive prioritized just enough time (PPJET), for quality-of-service (QoS) provisioning in bufferless optical burst switching (OBS) networks. PPJET provides better service for high-priority traffic by dropping reservations belonging to lower-priority traffic with a new channel-scheduling algorithm called preemptive latest-available unused channel with void filling (PLAUC-VF). An approximate method for calculating the dropping probability in PPJET is also discussed. Moreover, we perform discrete-event simulations to evaluate the performance of PPJET. Simulation results show that PPJET outperforms offset-based QoS schemes both in terms of dropping probability and end-to-end delay.

Original languageEnglish
Pages (from-to)707-719
Number of pages13
JournalJournal of Optical Networking
Issue number9
Publication statusPublished - 1 Jan 2004
Externally publishedYes



  • (060.4250) Fiber optics and optical communications: Networks
  • (060.4510) Fiber optics and optical communications: Optical communications

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Atomic and Molecular Physics, and Optics
  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering

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